Metal fastener.



W. E. WILLIAMS.

METAL FASTENER- APPLICATION FILED 8.18.1915.

Patented Oct. 10, 1916.

FIG.5

FIG-2 I VIII/fill!!! ll FIG-4 FIG-5 FIG.S

FIG.6

INVENTOR.

FIG-7 WITNESSES.

WILLIAM ERASTUS WILLIAMS, OF CHICAGO, ILLINOIS.

METAL FASTENER.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed February 18, 1915. SerialNo. 9,081.

To all whom it may concern:

Be it known that 1, WILLIAM ERASTUS WILLIAMS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Metal Fasten; ers, of which the following is a specification.

The object of my invention is to provide an improved device adapted to being drlven into wood to bind the parts together, or to hold the wood itself against splits or checks that take place when the wood isseasoning, or under breaking strains.

Reference will be had to the accompanying drawings in which---- Figure 1 1s a top view of the driving edge of my metal bar or strip; Fig. 2 is a side elevation of my bar. Fig. 3 is a cross section of the bar.' Fig. 4 is an edge view of the bar, looking toward its cutting edge. Fig. 5 shows two pieces of wood joined together by pieces of my bars. a stickof timber bound against splitting by pieces of my bar curved in outline. Fig. 7 is the end of a stick of timber bound with my bar against splitting when the bar is in the form of a letter 8. Fig. 8 is a view showing' a fault often found in driving strips.

In the drawing, 1 indicates the bar, 2 the cutting edge and 3 the driving face; 4 indicates transverse ribs or enlargements alternately spaced on opposite sides of the bar rely on the kinks in the strip for the hold-.

ing power, but if such strip be thin, strong tension causes it to bend and slip in the .curved channel in the wood.

With my invention, the ribs 4, hold in the wood so securely that the full strength of the strip is secured whenever thewood covers a few of the ribs on eachgside of the joint, or split.

In drivlng a. thin strlp of metal edgewise into wood, the metal often bends over in spots where the hammer hits it as is shown by 5, Fig. 8 and causes the loss of a strip Fig. 6 is the end of' or piece of metal, or else a poor result or failure of the iron. With my ribs 4, the strip is so stiffened that it readily drives into the strip, then should a crack start at a rib on one side, the same crack might appear at the rib directly opposite and "make a continuous split on both sides of the iron.

By making the ribs alternate as I have shown, while a split may start at onerib, see 6,. Fig. 6, it would not be likely to cross the iron but instead it may appear as a new crack, 7 on the other side of the iron, which is not as objectionable as were the crack to become continuous.

In Fig. 5, the strips are shown as straight pieces binding two pieces of wood together.

In Fig. 7, the strip is in the form of a letter S, in which latter case little benefit would be derived from the ribs 4, were they 7 on one,side only of the strip, as the chief load is borne on the inside of the curved ends of the S, and in that case the inside of one end would be smooth and pull through. With my strip the ribs being on both sides, the holding power of each end of the 8, balance each other.

My strip with its alternate ribs allow 'the strip to be thin and yet wide enough for strength and be adapted to be driven safely and it will hold in the wood.

What I claim is 1. A wood binding bar consisting of a fiat metal strip of a length many times its width having on each broad face transverse to its lineal axis, a series of integral ribs each forming similar opposite shoulders to afford the same resistance to slipping in either direction, whereby segments of any length cut from a stock strip are adapted for use.

2. For driving into wood to bind the same together, a flat metal strip having a plane body of uniform thickness provided on each of its opposite broad faces with a series of ribs extending from margin to margin perpendicularly to the strips lineal axis and forming. on each side of each rib a narrow shoulder perpendicular to the face from which the rib projects.

3. For driving into-wood to bind together the parts into which it is driven, ametal strip having a plane body provided on each broad face with a series of like integral ribs extending from margin to margin of the strip and perpendicular'to the face and to the strips axis, the ribs on each face being opposite the spaces between consecutive ribs on the opposite face, and both strips and ribs being beveled near one margin to form an edge in the medial plane of the strip.

4. A bar for binding together adjacent portions of Wood, consisting of a flat metal strip having its broad faces parallel and provided with a series of abruptly projecting ribs approximately equal in width to the thickness of the strip and extending from side to side of the stripperpendicularly to its axis, said body and ribs being beveled oppositely to form a thin medial edge at one side ofthe strip.

5. A bar for the purpose set forth, comprising a flat metalstrip of-approximatel uniform width and thickness having on eac broad face a series of spaced ribs extending perpendicularly across said face and projecting substantially perpendicularly therefrom, the ribbed strip being beveled to a cutting edge along "one of its margins.

In witness whereof, I have hereunto signed my name at Hammond, Ind., on the 15th day of Feb. 1915.

WILLIAM ERASTUS WILLIAMS.

Witnesses: 1

CHAS. B. WHITNEY, STANLEY J. SONNENBERG. 

